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Barry Bonds arrived at federal court as a jury deliberated perjury charges against him on Wednesday, April 13, 2011, in San Francisco. (AP Photo/Noah Berger)

By Zuri Berry, Boston.com Staff

Former San Francisco Giants slugger Barry Bonds has been found guilty of obstruction of justice, one of four counts a jury decided upon today after deliberating for the last four days in his perjury trial.

According to reports, the jury was dismissed after the other three counts were declared a mistrial.

Bonds' perjury trial stems from the 2003 raid on BALCO laboratories and his subsequent testimony to the grand jury. The counts that the jury could not resolve accused Bonds of lying to the grand jury investigating BALCO in 2003 when he said he never knowingly took steroids or human growth hormone, and when he said he was never injected by anyone except his doctors.

His lawyer, Allen Ruby, signaled that he would fight the conviction.

"There's some very important legal issues that need to be addressed with the verdict," Ruby said afterward.

Bonds declined to comment.

Bonds played his last season in 2007 with the San Francisco Giants, finishing as the all-time home runs leader with 762. He was a seven-time MVP, eight-time Gold Glove winner and a 14-time all-star.

He was indicted on Nov. 15, 2007, exactly 50 days after taking his final big league swing and 100 after topping Hank Aaron's career home run mark of 755. He also set the season record with 73 home runs in 2001 with the Giants.

Bonds did acknowledge that he took steroids but said Greg Anderson, his trainer and childhood friend, misled him into believing it was flaxseed oil and arthritis cream.

Anderson was sentenced by in 2005 to three months in prison and three months in home confinement after pleading guilty to one count of money laundering and one count of steroid distribution. The trainer was jailed on March 22 for the duration of the trial after again refusing to testify against Bonds. He was released last Friday.